all that weather was brought to you by mercedes-benz. >>> and coming up in a second, juju, we'll talk about the health of our oceans. and the health of the seafood coming from it. it's a brand-new alarm. >> it's beautiful where you are, sam. can you actually touch the stingrays? >> yeah. everything's been coming by. i don't like to touch too much. but, you know. they nibble at the glass. >> that's fantastic. you're part of the exhibit now, sam. appreciate it. see you soon. take care. >> okay. >>> we're going to change gears and talk about grocery shopping. you know when you're going up and down the aisles with your cart. and the phrase, what you don't know might hurt you? this applies to shopping. we have a lot of tips on how to shop for the healthiest food and stay healthy while you do it. and joining us is "shop smart's" magazine's senior product manager, mandy walker. how are you? i didn't know there was strategy. where you start is concern. >> there's only so many controls where food and safety is concerned. there's some things you can do if you shop smarter. >> if you start in th